| 1 | MODULE zdfphy |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE zdfphy *** |
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| 4 | !! Vertical ocean physics : manager of all vertical physics packages |
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| 5 | !!====================================================================== |
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| 6 | !! History : 4.0 ! 2017-04 (G. Madec) original code |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! zdf_phy_init : initialization of all vertical physics packages |
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| 11 | !! zdf_phy : upadate at each time-step the vertical mixing coeff. |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | USE oce ! ocean dynamics and tracers variables |
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| 14 | USE zdf_oce ! vertical physics: shared variables |
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| 15 | USE zdfdrg ! vertical physics: top/bottom drag coef. |
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| 16 | USE zdfsh2 ! vertical physics: shear production term of TKE |
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| 17 | USE zdfric ! vertical physics: RIChardson dependent vertical mixing |
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| 18 | USE zdftke ! vertical physics: TKE vertical mixing |
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| 19 | USE zdfgls ! vertical physics: GLS vertical mixing |
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| 20 | USE zdfosm ! vertical physics: OSMOSIS vertical mixing |
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| 21 | USE zdfddm ! vertical physics: double diffusion mixing |
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| 22 | USE zdfevd ! vertical physics: convection via enhanced vertical diffusion |
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| 23 | USE zdfiwm ! vertical physics: internal wave-induced mixing |
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| 24 | USE zdfswm ! vertical physics: surface wave-induced mixing |
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| 25 | USE zdfmxl ! vertical physics: mixed layer |
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| 26 | USE tranpc ! convection: non penetrative adjustment |
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| 27 | USE trc_oce ! variables shared between passive tracer & ocean |
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| 28 | USE sbc_oce ! surface module (only for nn_isf in the option compatibility test) |
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| 29 | USE sbcrnf ! surface boundary condition: runoff variables |
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| 30 | #if defined key_agrif |
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| 31 | USE agrif_opa_interp ! interpavm |
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| 32 | #endif |
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| 33 | ! |
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| 34 | USE in_out_manager ! I/O manager |
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| 35 | USE iom ! IOM library |
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| 36 | USE lbclnk ! lateral boundary conditions |
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| 37 | USE lib_mpp ! distribued memory computing |
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| 38 | USE timing ! Timing |
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| 39 | |
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| 40 | IMPLICIT NONE |
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| 41 | PRIVATE |
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| 42 | |
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| 43 | PUBLIC zdf_phy_init ! called by nemogcm.F90 |
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| 44 | PUBLIC zdf_phy ! called by step.F90 |
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| 45 | |
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| 46 | INTEGER :: nzdf_phy ! type of vertical closure used |
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| 47 | ! ! associated indicators |
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| 48 | INTEGER, PARAMETER :: np_CST = 1 ! Constant Kz |
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| 49 | INTEGER, PARAMETER :: np_RIC = 2 ! Richardson number dependent Kz |
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| 50 | INTEGER, PARAMETER :: np_TKE = 3 ! Turbulente Kinetic Eenergy closure scheme for Kz |
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| 51 | INTEGER, PARAMETER :: np_GLS = 4 ! Generic Length Scale closure scheme for Kz |
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| 52 | INTEGER, PARAMETER :: np_OSM = 5 ! OSMOSIS-OBL closure scheme for Kz |
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| 53 | |
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| 54 | LOGICAL :: l_zdfsh2 ! shear production term flag (=F for CST, =T otherwise (i.e. TKE, GLS, RIC)) |
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| 55 | |
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| 56 | !!---------------------------------------------------------------------- |
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| 57 | !! NEMO/OPA 4.0 , NEMO Consortium (2017) |
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| 58 | !! $Id: zdfphy.F90 8160 2017-06-10 07:31:34Z gm $ |
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| 59 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 60 | !!---------------------------------------------------------------------- |
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| 61 | CONTAINS |
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| 62 | |
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| 63 | SUBROUTINE zdf_phy_init |
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| 64 | !!---------------------------------------------------------------------- |
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| 65 | !! *** ROUTINE zdf_phy_init *** |
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| 66 | !! |
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| 67 | !! ** Purpose : initializations of the vertical ocean physics |
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| 68 | !! |
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| 69 | !! ** Method : Read namelist namzdf, control logicals |
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| 70 | !! set horizontal shape and vertical profile of background mixing coef. |
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| 71 | !!---------------------------------------------------------------------- |
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| 72 | INTEGER :: jk ! dummy loop indices |
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| 73 | INTEGER :: ioptio, ios ! local integers |
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| 74 | !! |
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| 75 | NAMELIST/namzdf/ ln_zdfcst, ln_zdfric, ln_zdftke, ln_zdfgls, & ! type of closure scheme |
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| 76 | & ln_zdfosm, & ! type of closure scheme |
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| 77 | & ln_zdfevd, nn_evdm, rn_evd , & ! convection : evd |
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| 78 | & ln_zdfnpc, nn_npc , nn_npcp, & ! convection : npc |
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| 79 | & ln_zdfddm, rn_avts, rn_hsbfr, & ! double diffusion |
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| 80 | & ln_zdfswm, & ! surface wave-induced mixing |
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| 81 | & ln_zdfiwm, & ! internal - - - |
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| 82 | & rn_avm0, rn_avt0, nn_avb, nn_havtb ! coefficients |
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| 83 | !!---------------------------------------------------------------------- |
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| 84 | ! |
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| 85 | ! !== Namelist ==! |
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| 86 | REWIND( numnam_ref ) ! Namelist namzdf in reference namelist : Vertical mixing parameters |
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| 87 | READ ( numnam_ref, namzdf, IOSTAT = ios, ERR = 901) |
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| 88 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf in reference namelist', lwp ) |
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| 89 | ! |
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| 90 | REWIND( numnam_cfg ) ! Namelist namzdf in reference namelist : Vertical mixing parameters |
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| 91 | READ ( numnam_cfg, namzdf, IOSTAT = ios, ERR = 902 ) |
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| 92 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namzdf in configuration namelist', lwp ) |
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| 93 | IF(lwm) WRITE ( numond, namzdf ) |
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| 94 | ! |
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| 95 | IF(lwp) THEN ! Parameter print |
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| 96 | WRITE(numout,*) |
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| 97 | WRITE(numout,*) 'zdf_phy_init: vertical physics' |
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| 98 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 99 | WRITE(numout,*) ' Namelist namzdf : set vertical mixing mixing parameters' |
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| 100 | WRITE(numout,*) ' vertical closure scheme' |
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| 101 | WRITE(numout,*) ' constant vertical mixing coefficient ln_zdfcst = ', ln_zdfcst |
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| 102 | WRITE(numout,*) ' Richardson number dependent closure ln_zdfric = ', ln_zdfric |
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| 103 | WRITE(numout,*) ' Turbulent Kinetic Energy closure (TKE) ln_zdftke = ', ln_zdftke |
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| 104 | WRITE(numout,*) ' Generic Length Scale closure (GLS) ln_zdfgls = ', ln_zdfgls |
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| 105 | WRITE(numout,*) ' OSMOSIS-OBL closure (OSM) ln_zdfosm = ', ln_zdfosm |
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| 106 | WRITE(numout,*) ' convection: ' |
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| 107 | WRITE(numout,*) ' enhanced vertical diffusion ln_zdfevd = ', ln_zdfevd |
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| 108 | WRITE(numout,*) ' applied on momentum (=1/0) nn_evdm = ', nn_evdm |
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| 109 | WRITE(numout,*) ' vertical coefficient for evd rn_evd = ', rn_evd |
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| 110 | WRITE(numout,*) ' non-penetrative convection (npc) ln_zdfnpc = ', ln_zdfnpc |
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| 111 | WRITE(numout,*) ' npc call frequency nn_npc = ', nn_npc |
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| 112 | WRITE(numout,*) ' npc print frequency nn_npcp = ', nn_npcp |
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| 113 | WRITE(numout,*) ' double diffusive mixing ln_zdfddm = ', ln_zdfddm |
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| 114 | WRITE(numout,*) ' maximum avs for dd mixing rn_avts = ', rn_avts |
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| 115 | WRITE(numout,*) ' heat/salt buoyancy flux ratio rn_hsbfr= ', rn_hsbfr |
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| 116 | WRITE(numout,*) ' gravity wave-induced mixing' |
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| 117 | WRITE(numout,*) ' surface wave (Qiao et al 2010) ln_zdfswm = ', ln_zdfswm ! surface wave induced mixing |
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| 118 | WRITE(numout,*) ' internal wave (de Lavergne et al 2017) ln_zdfiwm = ', ln_zdfiwm |
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| 119 | WRITE(numout,*) ' coefficients : ' |
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| 120 | WRITE(numout,*) ' vertical eddy viscosity rn_avm0 = ', rn_avm0 |
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| 121 | WRITE(numout,*) ' vertical eddy diffusivity rn_avt0 = ', rn_avt0 |
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| 122 | WRITE(numout,*) ' constant background or profile nn_avb = ', nn_avb |
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| 123 | WRITE(numout,*) ' horizontal variation for avtb nn_havtb = ', nn_havtb |
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| 124 | ENDIF |
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| 125 | |
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| 126 | ! !== Background eddy viscosity and diffusivity ==! |
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| 127 | IF( nn_avb == 0 ) THEN ! Define avmb, avtb from namelist parameter |
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| 128 | avmb(:) = rn_avm0 |
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| 129 | avtb(:) = rn_avt0 |
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| 130 | ELSE ! Background profile of avt (fit a theoretical/observational profile (Krauss 1990) |
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| 131 | avmb(:) = rn_avm0 |
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| 132 | avtb(:) = rn_avt0 + ( 3.e-4_wp - 2._wp * rn_avt0 ) * 1.e-4_wp * gdepw_1d(:) ! m2/s |
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| 133 | IF(ln_sco .AND. lwp) CALL ctl_warn( 'avtb profile not valid in sco' ) |
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| 134 | ENDIF |
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| 135 | ! ! 2D shape of the avtb |
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| 136 | avtb_2d(:,:) = 1._wp ! uniform |
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| 137 | ! |
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| 138 | IF( nn_havtb == 1 ) THEN ! decrease avtb by a factor of ten in the equatorial band |
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| 139 | ! ! -15S -5S : linear decrease from avt0 to avt0/10. |
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| 140 | ! ! -5S +5N : cst value avt0/10. |
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| 141 | ! ! 5N 15N : linear increase from avt0/10, to avt0 |
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| 142 | WHERE(-15. <= gphit .AND. gphit < -5 ) avtb_2d = (1. - 0.09 * (gphit + 15.)) |
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| 143 | WHERE( -5. <= gphit .AND. gphit < 5 ) avtb_2d = 0.1 |
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| 144 | WHERE( 5. <= gphit .AND. gphit < 15 ) avtb_2d = (0.1 + 0.09 * (gphit - 5.)) |
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| 145 | ENDIF |
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| 146 | ! |
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| 147 | DO jk = 1, jpk ! set turbulent closure Kz to the background value (avt_k, avm_k) |
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| 148 | avt_k(:,:,jk) = avtb_2d(:,:) * avtb(jk) * wmask (:,:,jk) |
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| 149 | avm_k(:,:,jk) = avmb(jk) * wmask (:,:,jk) |
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| 150 | END DO |
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| 151 | !!gm to be tested only the 1st & last levels |
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| 152 | ! avt (:,:, 1 ) = 0._wp ; avs(:,:, 1 ) = 0._wp ; avm (:,:, 1 ) = 0._wp |
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| 153 | ! avt (:,:,jpk) = 0._wp ; avs(:,:,jpk) = 0._wp ; avm (:,:,jpk) = 0._wp |
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| 154 | !!gm |
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| 155 | avt (:,:,:) = 0._wp ; avs(:,:,:) = 0._wp ; avm (:,:,:) = 0._wp |
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| 156 | |
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| 157 | ! !== Convection ==! |
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| 158 | ! |
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| 159 | IF( ln_zdfnpc .AND. ln_zdfevd ) CALL ctl_stop( 'zdf_phy_init: chose between ln_zdfnpc and ln_zdfevd' ) |
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| 160 | IF( ln_zdfosm .AND. ln_zdfevd ) CALL ctl_stop( 'zdf_phy_init: chose between ln_zdfosm and ln_zdfevd' ) |
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| 161 | IF( lk_top .AND. ln_zdfnpc ) CALL ctl_stop( 'zdf_phy_init: npc scheme is not working with key_top' ) |
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| 162 | IF( lk_top .AND. ln_zdfosm ) CALL ctl_stop( 'zdf_phy_init: osmosis scheme is not working with key_top' ) |
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| 163 | IF(lwp) THEN |
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| 164 | WRITE(numout,*) |
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| 165 | IF ( ln_zdfnpc ) THEN ; WRITE(numout,*) ' convection: use non penetrative convective scheme' |
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| 166 | ELSEIF( ln_zdfevd ) THEN ; WRITE(numout,*) ' convection: use enhanced vertical diffusion scheme' |
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| 167 | ELSE ; WRITE(numout,*) ' convection: no specific scheme used' |
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| 168 | ENDIF |
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| 169 | ENDIF |
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| 170 | |
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| 171 | IF(lwp) THEN !== Double Diffusion Mixing parameterization ==! (ddm) |
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| 172 | WRITE(numout,*) |
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| 173 | IF( ln_zdfddm ) THEN ; WRITE(numout,*) ' use double diffusive mixing: avs /= avt' |
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| 174 | ELSE ; WRITE(numout,*) ' No double diffusive mixing: avs = avt' |
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| 175 | ENDIF |
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| 176 | ENDIF |
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| 177 | |
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| 178 | ! !== type of vertical turbulent closure ==! (set nzdf_phy) |
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| 179 | ioptio = 0 |
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| 180 | IF( ln_zdfcst ) THEN ; ioptio = ioptio + 1 ; nzdf_phy = np_CST ; ENDIF |
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| 181 | IF( ln_zdfric ) THEN ; ioptio = ioptio + 1 ; nzdf_phy = np_RIC ; CALL zdf_ric_init ; ENDIF |
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| 182 | IF( ln_zdftke ) THEN ; ioptio = ioptio + 1 ; nzdf_phy = np_TKE ; CALL zdf_tke_init ; ENDIF |
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| 183 | IF( ln_zdfgls ) THEN ; ioptio = ioptio + 1 ; nzdf_phy = np_GLS ; CALL zdf_gls_init ; ENDIF |
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| 184 | IF( ln_zdfosm ) THEN ; ioptio = ioptio + 1 ; nzdf_phy = np_OSM ; CALL zdf_osm_init ; ENDIF |
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| 185 | ! |
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| 186 | IF( ioptio /= 1 ) CALL ctl_stop( 'zdf_phy_init: one and only one vertical diffusion option has to be defined ' ) |
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| 187 | IF( ln_isfcav ) THEN |
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| 188 | IF( ln_zdfric .OR. ln_zdfgls ) CALL ctl_stop( 'zdf_phy_init: zdfric and zdfgls never tested with ice shelves cavities ' ) |
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| 189 | ENDIF |
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| 190 | ! ! shear production term flag |
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| 191 | IF( ln_zdfcst ) THEN ; l_zdfsh2 = .FALSE. |
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| 192 | ELSE ; l_zdfsh2 = .TRUE. |
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| 193 | ENDIF |
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| 194 | |
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| 195 | ! !== gravity wave-driven mixing ==! |
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| 196 | IF( ln_zdfiwm ) CALL zdf_iwm_init ! internal wave-driven mixing |
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| 197 | IF( ln_zdfswm ) CALL zdf_swm_init ! surface wave-driven mixing |
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| 198 | |
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| 199 | ! !== top/bottom friction ==! |
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| 200 | CALL zdf_drg_init |
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| 201 | ! |
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| 202 | ! !== time-stepping ==! |
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| 203 | ! Check/update of time stepping done in dynzdf_init/trazdf_init |
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| 204 | !!gm move it here ? |
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| 205 | ! |
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| 206 | END SUBROUTINE zdf_phy_init |
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| 207 | |
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| 208 | |
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| 209 | SUBROUTINE zdf_phy( kt ) |
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| 210 | !!---------------------------------------------------------------------- |
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| 211 | !! *** ROUTINE zdf_phy *** |
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| 212 | !! |
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| 213 | !! ** Purpose : Update ocean physics at each time-step |
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| 214 | !! |
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| 215 | !! ** Method : |
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| 216 | !! |
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| 217 | !! ** Action : avm, avt vertical eddy viscosity and diffusivity at w-points |
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| 218 | !! nmld ??? mixed layer depth in level and meters <<<<====verifier ! |
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| 219 | !! bottom stress..... <<<<====verifier ! |
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| 220 | !!---------------------------------------------------------------------- |
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| 221 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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| 222 | ! |
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| 223 | INTEGER :: ji, jj, jk ! dummy loop indice |
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| 224 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zsh2 ! shear production |
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| 225 | !! --------------------------------------------------------------------- |
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| 226 | ! |
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| 227 | IF( ln_timing ) CALL timing_start('zdf_phy') |
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| 228 | ! |
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| 229 | IF( l_zdfdrg ) THEN !== update top/bottom drag ==! (non-linear cases) |
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| 230 | ! |
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| 231 | ! !* bottom drag |
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| 232 | CALL zdf_drg( kt, mbkt , r_Cdmin_bot, r_Cdmax_bot, & ! <<== in |
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| 233 | & r_z0_bot, r_ke0_bot, rCd0_bot, & |
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| 234 | & rCdU_bot ) ! ==>> out : bottom drag [m/s] |
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| 235 | IF( ln_isfcav ) THEN !* top drag (ocean cavities) |
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| 236 | CALL zdf_drg( kt, mikt , r_Cdmin_top, r_Cdmax_top, & ! <<== in |
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| 237 | & r_z0_top, r_ke0_top, rCd0_top, & |
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| 238 | & rCdU_top ) ! ==>> out : bottom drag [m/s] |
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| 239 | ENDIF |
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| 240 | ENDIF |
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| 241 | ! |
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| 242 | ! !== Kz from chosen turbulent closure ==! (avm_k, avt_k) |
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| 243 | ! |
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| 244 | IF( l_zdfsh2 ) & !* shear production at w-points (energy conserving form) |
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| 245 | CALL zdf_sh2( ub, vb, un, vn, avm_k, & ! <<== in |
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| 246 | & zsh2 ) ! ==>> out : shear production |
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| 247 | ! |
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| 248 | SELECT CASE ( nzdf_phy ) !* Vertical eddy viscosity and diffusivity coefficients at w-points |
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| 249 | CASE( np_RIC ) ; CALL zdf_ric( kt, gdept_n, zsh2, avm_k, avt_k ) ! Richardson number dependent Kz |
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| 250 | CASE( np_TKE ) ; CALL zdf_tke( kt , zsh2, avm_k, avt_k ) ! TKE closure scheme for Kz |
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| 251 | CASE( np_GLS ) ; CALL zdf_gls( kt , zsh2, avm_k, avt_k ) ! GLS closure scheme for Kz |
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| 252 | CASE( np_OSM ) ; CALL zdf_osm( kt , avm_k, avt_k ) ! OSMOSIS closure scheme for Kz |
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| 253 | ! CASE( np_CST ) ! Constant Kz (reset avt, avm to the background value) |
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| 254 | ! ! avt_k and avm_k set one for all at initialisation phase |
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| 255 | !!gm avt(2:jpim1,2:jpjm1,1:jpkm1) = rn_avt0 * wmask(2:jpim1,2:jpjm1,1:jpkm1) |
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| 256 | !!gm avm(2:jpim1,2:jpjm1,1:jpkm1) = rn_avm0 * wmask(2:jpim1,2:jpjm1,1:jpkm1) |
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| 257 | END SELECT |
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| 258 | ! |
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| 259 | ! !== ocean Kz ==! (avt, avs, avm) |
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| 260 | ! |
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| 261 | ! !* start from turbulent closure values |
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| 262 | avt(:,:,2:jpkm1) = avt_k(:,:,2:jpkm1) |
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| 263 | avm(:,:,2:jpkm1) = avm_k(:,:,2:jpkm1) |
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| 264 | ! |
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| 265 | IF( ln_rnf_mouth ) THEN !* increase diffusivity at rivers mouths |
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| 266 | DO jk = 2, nkrnf |
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| 267 | avt(:,:,jk) = avt(:,:,jk) + 2._wp * rn_avt_rnf * rnfmsk(:,:) * wmask(:,:,jk) |
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| 268 | END DO |
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| 269 | ENDIF |
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| 270 | ! |
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| 271 | IF( ln_zdfevd ) CALL zdf_evd( kt, avm, avt ) !* convection: enhanced vertical eddy diffusivity |
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| 272 | ! |
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| 273 | ! !* double diffusive mixing |
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| 274 | IF( ln_zdfddm ) THEN ! update avt and compute avs |
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| 275 | CALL zdf_ddm( kt, avm, avt, avs ) |
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| 276 | ELSE ! same mixing on all tracers |
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| 277 | avs(2:jpim1,2:jpjm1,1:jpkm1) = avt(2:jpim1,2:jpjm1,1:jpkm1) |
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| 278 | ENDIF |
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| 279 | ! |
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| 280 | ! !* wave-induced mixing |
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| 281 | IF( ln_zdfswm ) CALL zdf_swm( kt, avm, avt, avs ) ! surface wave (Qiao et al. 2004) |
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| 282 | IF( ln_zdfiwm ) CALL zdf_iwm( kt, avm, avt, avs ) ! internal wave (de Lavergne et al 2017) |
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| 283 | |
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| 284 | #if defined key_agrif |
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| 285 | ! interpolation parent grid => child grid for avm_k ( ex : at west border: update column 1 and 2) |
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| 286 | IF( l_zdfsh2 ) CALL Agrif_avm |
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| 287 | #endif |
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| 288 | |
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| 289 | ! !* Lateral boundary conditions (sign unchanged) |
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| 290 | IF( l_zdfsh2 ) THEN |
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| 291 | CALL lbc_lnk_multi( avm_k, 'W', 1. , avt_k, 'W', 1., & |
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| 292 | & avm , 'W', 1. , avt , 'W', 1. , avs , 'W', 1. ) |
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| 293 | ELSE |
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| 294 | CALL lbc_lnk( avm , 'W', 1. , avt , 'W', 1. , avs , 'W', 1. ) |
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| 295 | ENDIF |
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| 296 | ! |
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| 297 | IF( l_zdfdrg ) THEN ! drag have been updated (non-linear cases) |
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| 298 | IF( ln_isfcav ) THEN ; CALL lbc_lnk_multi( rCdU_top, 'T', 1. , rCdU_bot, 'T', 1. ) ! top & bot drag |
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| 299 | ELSE ; CALL lbc_lnk ( rCdU_bot, 'T', 1. ) ! bottom drag only |
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| 300 | ENDIF |
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| 301 | ! |
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| 302 | CALL zdf_mxl( kt ) !* mixed layer depth, and level |
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| 303 | ! |
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| 304 | IF( lrst_oce ) THEN !* write TKE, GLS or RIC fields in the restart file |
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| 305 | IF( ln_zdftke ) CALL tke_rst( kt, 'WRITE' ) |
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| 306 | IF( ln_zdfgls ) CALL gls_rst( kt, 'WRITE' ) |
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| 307 | IF( ln_zdfric ) CALL ric_rst( kt, 'WRITE' ) |
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| 308 | ! NB. OSMOSIS restart (osm_rst) will be called in step.F90 after wn has been updated |
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| 309 | ENDIF |
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| 310 | ! |
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| 311 | IF( ln_timing ) CALL timing_stop('zdf_phy') |
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| 312 | ! |
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| 313 | END SUBROUTINE zdf_phy |
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| 314 | |
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| 315 | !!====================================================================== |
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| 316 | END MODULE zdfphy |
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